xref: /onnv-gate/usr/src/lib/libcurses/screen/quick_echo.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24*0Sstevel@tonic-gate  * Use is subject to license terms.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate /*	Copyright (c) 1988 AT&T	*/
28*0Sstevel@tonic-gate /*	  All Rights Reserved	*/
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate  * University Copyright- Copyright (c) 1982, 1986, 1988
32*0Sstevel@tonic-gate  * The Regents of the University of California
33*0Sstevel@tonic-gate  * All Rights Reserved
34*0Sstevel@tonic-gate  *
35*0Sstevel@tonic-gate  * University Acknowledgment- Portions of this document are derived from
36*0Sstevel@tonic-gate  * software developed by the University of California, Berkeley, and its
37*0Sstevel@tonic-gate  * contributors.
38*0Sstevel@tonic-gate  */
39*0Sstevel@tonic-gate 
40*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
41*0Sstevel@tonic-gate 
42*0Sstevel@tonic-gate /*LINTLIBRARY*/
43*0Sstevel@tonic-gate 
44*0Sstevel@tonic-gate #include	<sys/types.h>
45*0Sstevel@tonic-gate #include	"curses_inc.h"
46*0Sstevel@tonic-gate 
47*0Sstevel@tonic-gate extern	int	outchcount;
48*0Sstevel@tonic-gate 
49*0Sstevel@tonic-gate /*
50*0Sstevel@tonic-gate  *  These routines short-circuit much of the innards of curses in order to get
51*0Sstevel@tonic-gate  *  a single character output to the screen quickly! It is used by waddch().
52*0Sstevel@tonic-gate  */
53*0Sstevel@tonic-gate 
54*0Sstevel@tonic-gate int
_quick_echo(WINDOW * win,chtype ch)55*0Sstevel@tonic-gate _quick_echo(WINDOW *win, chtype ch)
56*0Sstevel@tonic-gate {
57*0Sstevel@tonic-gate 	short	y = win->_cury;
58*0Sstevel@tonic-gate 	short	SPy = y + win->_begy + win->_yoffset;
59*0Sstevel@tonic-gate 	short	SPx = (win->_curx - 1) + win->_begx;
60*0Sstevel@tonic-gate 	chtype	rawc = _CHAR(ch), rawattrs = _ATTR(ch);
61*0Sstevel@tonic-gate 
62*0Sstevel@tonic-gate 	if ((curscr->_flags & _CANT_BE_IMMED) ||
63*0Sstevel@tonic-gate 	    (win->_flags & _WINCHANGED) ||
64*0Sstevel@tonic-gate 	    (win->_clear) || (curscr->_clear) ||
65*0Sstevel@tonic-gate 	    (_virtscr->_flags & _WINCHANGED) ||
66*0Sstevel@tonic-gate 	    (SPy > ((LINES + SP->Yabove) - 1)) || (SPx > (COLS - 1)) ||
67*0Sstevel@tonic-gate 	    (SP->slk && (SP->slk->_changed == TRUE))) {
68*0Sstevel@tonic-gate 		win->_flags |= _WINCHANGED;
69*0Sstevel@tonic-gate 		return (wrefresh(win));
70*0Sstevel@tonic-gate 	}
71*0Sstevel@tonic-gate 
72*0Sstevel@tonic-gate 	outchcount = 0;
73*0Sstevel@tonic-gate 	win->_firstch[y] = _INFINITY;
74*0Sstevel@tonic-gate 	win->_lastch[y] = -1;
75*0Sstevel@tonic-gate 	/* If the cursor is not in the right place, put it there! */
76*0Sstevel@tonic-gate 	if ((SPy != curscr->_cury) || (SPx != curscr->_curx)) {
77*0Sstevel@tonic-gate 		(void) mvcur(curscr->_cury, curscr->_curx, SPy, SPx);
78*0Sstevel@tonic-gate 		curscr->_cury = SPy;
79*0Sstevel@tonic-gate 	}
80*0Sstevel@tonic-gate 	curscr->_curx = SPx + 1;
81*0Sstevel@tonic-gate 	_CURHASH[SPy] = _NOHASH;
82*0Sstevel@tonic-gate 	if (ch != ' ') {
83*0Sstevel@tonic-gate 		if (SPx > _ENDNS[SPy])
84*0Sstevel@tonic-gate 			_ENDNS[SPy] = SPx;
85*0Sstevel@tonic-gate 		if (SPx < _BEGNS[SPy])
86*0Sstevel@tonic-gate 			_BEGNS[SPy] = SPx;
87*0Sstevel@tonic-gate 	}
88*0Sstevel@tonic-gate 	_virtscr->_y[SPy][SPx] = curscr->_y[SPy][SPx] = ch;
89*0Sstevel@tonic-gate 
90*0Sstevel@tonic-gate 	if (rawattrs != curscr->_attrs)
91*0Sstevel@tonic-gate 		_VIDS(rawattrs, curscr->_attrs);
92*0Sstevel@tonic-gate 
93*0Sstevel@tonic-gate 	if (SP->phys_irm)
94*0Sstevel@tonic-gate 		_OFFINSERT();
95*0Sstevel@tonic-gate 
96*0Sstevel@tonic-gate 	/* Write it out! */
97*0Sstevel@tonic-gate 	/* LINTED */
98*0Sstevel@tonic-gate 	(void) _outch((char) rawc);
99*0Sstevel@tonic-gate 	(void) fflush(SP->term_file);
100*0Sstevel@tonic-gate 
101*0Sstevel@tonic-gate 	return (outchcount);
102*0Sstevel@tonic-gate }
103